author(s): Torstein Hønsi
https://bitbucket.org/jkowalleck/highcharts-legendextension
jQuery 1.9.1, HTML, CSS, JavaScript
jQuery 1.7.2, HTML, CSS, JavaScript
No-Library (pure JS), HTML, CSS, JavaScript
jQuery 1.11.0, HTML, CSS, JavaScript
http://stackoverflow.com/questions/13600741/filtering-legend-of-a-highcharts-by-only-visible-series Jugal Thakkar http://jugal.me/
jQuery (edge), HTML, CSS, JavaScript